| ??? 08/11/02 00:30 Read: times |
#27041 - Port problems with AT89C52 |
Ports 1,2,3 are stuck HIGH on my AT89C52. I'm supplying a clean +5V (through a LM7805 and some capacitors) to pin 40 (VCC) and pin 31 (EA). pin 20 is tied to GND, and i'm using a regular 11.0592 Mhz crystal. The code SDCC generates looks ok, its just a simple P1_2 = 0, etc..
I found another thread over the topic, but his problem was he left the EA pin floating, which I am not. Help and thanks, Chris |
| Topic | Author | Date |
| Port problems with AT89C52 | 01/01/70 00:00 | |
| RE: Port problems with AT89C52 | 01/01/70 00:00 | |
| RE: Port problems with AT89C52 | 01/01/70 00:00 | |
| RE: Port problems with AT89C52 | 01/01/70 00:00 | |
| RE: Port problems with AT89C52 | 01/01/70 00:00 | |
| RE: Port problems with AT89C52 | 01/01/70 00:00 | |
| RE: Port problems with AT89C52 | 01/01/70 00:00 | |
| RE: Port problems with AT89C52 | 01/01/70 00:00 | |
| RE: Port problems with AT89C52 | 01/01/70 00:00 | |
| RE: Port problems with AT89C52 | 01/01/70 00:00 | |
| RE: Port problems with AT89C52 | 01/01/70 00:00 | |
| RE: Port problems with AT89C52 | 01/01/70 00:00 | |
| RE: Port problems with AT89C52 | 01/01/70 00:00 | |
| RE: Port problems with AT89C52 | 01/01/70 00:00 | |
| RE: Port problems with AT89C52 | 01/01/70 00:00 | |
| RE: Port problems with AT89C52 | 01/01/70 00:00 | |
| RE: Port problems with AT89C52 | 01/01/70 00:00 | |
| RE: Port problems with AT89C52 | 01/01/70 00:00 | |
RE: Port problems with AT89C52 | 01/01/70 00:00 |



